Mining-machine.



No. 841,625. PATENTED JAN. 15, 1907.

W. B. CHAPMAN.

MINING MACHINE.

APPLICATION ,I'ILED JUNE 27.19%.

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No 841,625 4 PATENTED JAN. 15, 190.7.

W. B. CHAPMAN.

MINING MACHINE.

APFLIGATION IVILEI) JUNE 27.1905.

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Specification of Letters Patent.

Patented Jan. 15, 1907.

Application filed June 2'7, 1905. Serial No. 267,226.

T at w/wm it may concern:

Be it known that I, WVILLIAM B. CHAPMAN, a citizen of the United States,residing at VVilburton, in the Choctaw Nation, Indian Territory, haveinvented certain new and useful Improvements in Mining-Machines; and Ido hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to mining-machines.

One object of the invention is to provide a machine for mining coal orthe like through the instrumentality of a springactuated plungeroperated without the use of steam, air, or electricity.

Another object of the invention resides in the provision of a wheeledframe of such character that its excavating elements may be controlledwithout steam, air, or electricity.

A still further object of the invention is to provide a mechanism ofsuch character that it may be readily moved from one place to anotherand wherein excavating can be done by hand through the manipulation of asingle lever or handle.

With these and other objects in view the present invention consists inthe combination and arrangement of parts, as will be hereinafter morefully described, shown in the accompanying drawings, and particularlypointed out in the appended claims, it being understood that changes inthe form, proportion, size, and minor details may be made within thescope of the claims without departing from the spirit or sacrificing anyof the advantages of the present invention.

In the accompanying drawings, Figure 1 is a side elevation of myinvention. Fig. 2 is a rear elevation of the invention. Fig. 3 is atransverse sectional view on the line a a of Fig. 1. Fig. 4 is a detailperspective view of the spider, including its rollers or wheels. Fig. 5is a detail elevation of the piston or flange.

Referring now more particularly to the accompanying drawings, thereference characters 1 and 2 designate the top and bottom of a frameworkemployed for the support of my improved mechanism. Arranged between thetop and bottom members 1 and 2 at the forward and rear end thereof is atransverse connecting block or member 3 and 4, which may be securedthereto in any suitable manner.

Secured t0 the under face of the sill or member 2 is a pair of trussbars5, each of which is directed outwardly from each other upon the sides ofthe member 2 and therebeneath to provide a broad bearing-surface for thewheels 6 and 7, mounted upon the axle 8, arranged in the bearings 9 atthe straight portions 10 of the truss-bars, as clearly shown in thedrawings.

Mounted upon and above the upper memher 1 of the frame and spacedtherefrom by means of blocks 11. and 12 is a strip 13, between which andthe frame-piece 1 is a slidable piston or plunger 14, having a dependingflange 15, designed to move in a slot 16, arranged longitudinally of themember 1 for a purpose presently explained, it being seen that theforward block 12, arranged between the members 1 and 13, is providedwith a passage 16 to permit of sliding movement of the plunger or piston14 therethrough.

Secured to the under face of the sill or frame member 2 is a pair ofbearing-blocks 17, in which is j ournaled a shaft 18, having agear-wheel 19 secured upon one of its ends and a balance-wheel securedupon its opposite end, the said shaft 18 extending upon opposite sidesof the beam or sill 2, resulting in the balance-wheel 20 being disposedupon one side and the gearwheel 19 upon the otherside of the member 2.The balancewheel 20 is provided with an integral pinion 21 upon itsinner face, which is designed to mesh with a gear-wheel 22, secured uponone end of a transverse shaft 23, mounted in suitable bearing-blocks 24upon the upper face of the beam or sill 2, the opposite end of the saidshaft 23 being provided with a gearwheel designed for mesh with thegear-wheel 19 upon the shaft 18.

Mounted upon the shaft 18, adjacent one side of the sill or beam 2, is aspider 24, having three legs 25, 26, and 27, each of which has itsextremity provided with a laterallyextending roller 28 upon its innerface of such width as to project between the beams or sills 1 and 2 andengage successively the flange 15 of the piston or plunger 14 to forcethe latter backward when the rollers engage the flange, as will bepresently explained. It will be observed that the piston or plunger hasportions 30 and 31 depending therefrom for engagement in thelongitudinal slot of the beam 1 to prevent lateral displacement thereofwith respect to its guide.

Fixedly mounted upon one end of the shaft 23 is a crank handle or lever32, by

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which the said shaft and its gear-wheels are rotated. Upon rotation ofthis shaft and its wheels toward the right it is obvious that thegear-wheel 19, the balance-wheel 20, and the pinion 21 will be rotatedin the opposite direction, causing the rollers of the spider to bebrought successively into contact with the flange 15 of the plunger orpiston 14, causing the latter to be thrown backwardly within its guideagainst the action of the helical or other spring 33, which is securedat one of its ends to a lug 33, formed on the depending portion 31 ofthe piston or plunger, with its opposite end connected to a hook or thelike 34, secured to the rear face of the forward block 3 andintermediate the adjacent faces of the upper and lower beams or sills 1and 2. It will thus be seen that the plunger or piston 14 receives itsstroke as a result of said helical spring 33, for when the roller of Ione leg of .the spider has moved the piston or plunger back a certaindistance the spring creates a pull upon the piston or plunger 14,causing a rapid movement or stroke of the latter forwardly, therebycausing a drill or.

other implement (not shown) which may be secured to the free end of theplunger or piston to pierce the walls of the mine. Of course as soon asone of the rollers of the leg of the spider leaves the flange of theplunger or piston the spring has no more than caused a rapid forwardmovement of the piston before another roller of the following leg of thespider will again engage the flange 15 and force the plunger or pistonbackwardly for another stroke.

From the foregoing it will be seen that I provide an exceedingly simpleand comparatively inexpensive machine for mining purposes and that byreason of the divergency of the truss-bars with respect to each other abroad surface is provided to prevent accidental lateral displacement ofthe machine. It will be seen also that the Width of the forward andrearward ends of the machine will permit the same to enter narrow waysor the like in the wall of the mine. Another feature to be appreciatedis that the machine may be tilted vertically upon its axle by theoperators for the purpose of drilling or digging at different heights inthe wall of the mine, the machine being withdrawn from the work beforebeing raised and lowered vertically at its forward end by means of thehand-piece 35, secured to the rear block 4.

What is claimeu is 1. In a mining-machine, the combination, with avertically-tiltable frame, of a strip secured to the upper face of theframe in spaced parallel relation therewith; an endwise-movable plungermounted in the space between said strip and frame a retractile springconnected at opposite ends to said plunger and frame; means adapted toengage the plunger 'at successive intervals to force the samerearwardlywithin said space, against the action, of said spring; andmeans for operating said forcing means.

2. In a mining-machine, in combination, with a vertically-tiltableframe, a strip secured to the upper face of the frame in spaced parallelrelation therewith; an endwise-movable plunger disposed in the spacebetween. said strip and frame; a retractile spring secured at one end tothe forward end of the frame, and at its other end to said plunger; ashaft transversely mounted in said frame; a spider carried by said shaftand including a series of arms provided with laterally-extendingrollers; a depending flange secured to said plunger intermediate theends thereof, in the path of said rollers; and means for rotating saidshaft, to cause said rollers to successively engage said flange, forforcing said plunger rearwaraly within said space, against the action ofsaid opening.

3. In a mining-machine, the combination, with a vertically-tiltableframe, of a strip spaced. above the upper face of and disposed inparallel relation therewith, a plunger mounted in the space between thesaid strip and frame, and movable endwise therein, said plungerprojecting beyond the forward end of the machine; a depending flangesecured to said plunger intermediate the ends thereof; a retractilespring secured at one end to the forward end of the frame, and at theother end to said. plunger; means for engaging said flange to force theplunger rearwardly within said space against the action of said spring;and means for operating said forcing means.

4. In a mining-machine, in combination with an axle and traction-wheelsmounted upon opposite ends thereof, a vertically-tiltable frame pivotedupon said axle; a strip secured to the upper face of the frame in spacedparallel relation therewith; an endwise-mov able plunger mounted in thespace between the said strip and frame; a retractile spring connected atopposite ends to said plunger and frame; means adapted to engage theplun ger at successive intervals, to force the same rearwardly withinsaid space, against the ac tion of said spring; and means for operatingsaid forcing means.

In testimony whereof I aflix my signature in presence of two witnesses.

his WILLIAM B. CHAPMAN.

. mark Witnesses:

L. C. EDMIs'roN, J. POE.

